EP2508839B1 - Dispositif de mesure doté d'une commutation d'émission pour la transmission sans fil d'un signal de mesure - Google Patents

Dispositif de mesure doté d'une commutation d'émission pour la transmission sans fil d'un signal de mesure Download PDF

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Publication number
EP2508839B1
EP2508839B1 EP11161535.7A EP11161535A EP2508839B1 EP 2508839 B1 EP2508839 B1 EP 2508839B1 EP 11161535 A EP11161535 A EP 11161535A EP 2508839 B1 EP2508839 B1 EP 2508839B1
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EP
European Patent Office
Prior art keywords
circuit
measuring device
transmission
signal
measuring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11161535.7A
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German (de)
English (en)
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EP2508839A1 (fr
Inventor
Wolfgang Seibold
Thomas Engler
Eugen Hund
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carl Mahr Holding GmbH
Original Assignee
Carl Mahr Holding GmbH
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Application filed by Carl Mahr Holding GmbH filed Critical Carl Mahr Holding GmbH
Priority to EP11161535.7A priority Critical patent/EP2508839B1/fr
Priority to JP2014503081A priority patent/JP2014516434A/ja
Priority to CN201280017190.7A priority patent/CN103534550B/zh
Priority to PCT/EP2012/055692 priority patent/WO2012136566A1/fr
Priority to US13/620,777 priority patent/US8839669B2/en
Publication of EP2508839A1 publication Critical patent/EP2508839A1/fr
Publication of EP2508839B1 publication Critical patent/EP2508839B1/fr
Application granted granted Critical
Priority to JP2015223638A priority patent/JP6247677B2/ja
Priority to JP2017100715A priority patent/JP6373449B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/22—Feeler-pin gauges, e.g. dial gauges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2210/00—Aspects not specifically covered by any group under G01B, e.g. of wheel alignment, caliper-like sensors
    • G01B2210/58—Wireless transmission of information between a sensor or probe and a control or evaluation unit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2209/00—Arrangements in telecontrol or telemetry systems
    • H04Q2209/80—Arrangements in the sub-station, i.e. sensing device

Definitions

  • the invention relates to a measuring device that can be designed as a caliper gauge, a dial gauge or a micrometer.
  • the measuring device is used for example for length measurement. It has a housing, on which a transducer is arranged. By changing the position of the transducer, an electrical measurement signal is generated in the measuring device via a measuring circuit. The position of the transducer can be changed by a movement or deformation, for example, a linear displacement or pivoting movement.
  • the measuring device can have a display or another display device on which the measured value corresponding to the measuring signal can be output for the operator. Such measuring devices have been known for a long time.
  • DE 10 2006 017 243 A1 describes a transceiver for transmitting field device signals. In this way, process variables are transmitted wirelessly using a radio interface.
  • the transceiver can be connected to the field device interface of a field device and perform a wireless transmission.
  • the transceiver can record a field device signal at a field device interface and send it via a radio interface.
  • a field device signal for example, measured values.
  • a tire tester is described, which is intended for measuring the air pressure and the tread depth.
  • the tire tester can wirelessly transmit the measured tread depth to a receiver.
  • a transmitting device is provided in the housing of the tester.
  • JP 7-27501 is a digital calliper with a transmission circuit described.
  • the housing of the caliper has batteries, a measuring circuit and a transmission circuit.
  • the antenna of the transmission circuit is designed as a printed circuit board antenna and integrated into the housing.
  • a wear measuring device for wheel brake discs is in DE 20 2006 017 829 U1 described.
  • a cover interface is present, which can also be designed as a wireless interface.
  • a US facility set up for wireless transmission of measurement data also describes CN 201 36 41 31 ,
  • US Pat. No. 6,526,670 B1 a system of a measuring machine with a measuring head, which has a measuring head side transmitting and receiving circuit. From this, a machine-side transmitting and receiving circuit is arranged on the machine frame. For example, optical signals can be transmitted between the two circuits. In this way, it is possible to transmit from the machine side transmitting and receiving circuit on or off signals to the measuring head, for example, to put this in an idle state or on or off. Depending on the transmitted signal, the measuring head is therefore activated or deactivated in an event-controlled manner. In order to avoid accidental switching on due to interference signals, for example by fluorescent lamps, the measuring head has an evaluation circuit. The received signals are calibrated, whereby interference signals are detected and do not lead to switching on or off the power supply of the measuring head.
  • JP 2010231566 describes a so-called "multi-hop network" of many sensor units that serve as a relay station to forward signals from other sensor units can.
  • each sensor unit is regularly in a ready to receive state.
  • the time duration between two successive ready-to-receive states is shorter than the transmission duration when transmitting a signal, so that it is ensured that during the transmission of this signal by a transmitting sensor unit, another sensor unit works as a receiver. In this way, messages are to be transmitted over several stations over long distances.
  • EP 1 630 762 A2 describes wireless measuring devices connected to a central unit.
  • the measuring devices cyclically for a short time from a state of rest in a receptive state.
  • a measurement instruction signal received from the central unit contains data indicating the transmission time for the measuring device.
  • the central unit sends a synchronization signal, as reference time for the later transmission time. After reaching the transmission time, the measuring device sends data to the central unit.
  • the measuring device has an electrical and / or electronic measuring circuit which is set up to form an electrical measuring signal from the position of the measuring transducer.
  • the measuring device preferably has an acoustic and / or optical output unit, eg a display, via which the measured value of the operator person corresponding to the measuring signal can be displayed.
  • a transmission circuit is provided which is adapted to receive the measurement signal from the measurement circuit and from this a transmission signal having the currently applied measurement value to generate, which can be transmitted by the measuring device wirelessly to the central unit.
  • Both the transmission circuit and the measuring circuit are arranged in the common housing of the measuring device, preferably on a common printed circuit board.
  • the antenna of the transmission circuit is also disposed within the housing and preferably designed as a printed circuit board antenna or as an SMD antenna.
  • the measuring device can transmit measured values wirelessly.
  • An external transmitter or an external antenna omitted and do not interfere with the handling of the measuring device.
  • an externally accessible interface between the measuring circuit and the transmission circuit is avoided. This has the advantage that the housing can be better realized in the appropriate housing protection as dust-proof or dustproof and / or water-resistant housing. If necessary, it is also possible to completely dispense with wired interfaces and to provide only the existing within the housing wireless transmission interface through the transmission circuit.
  • a receiving circuit is provided, which is designed to be integrated with the transmitting circuit as a transmitting and receiving circuit.
  • the transmitting and receiving circuit synchronizes with the central unit in a predetermined time interval. If there is a send request, the transmission of the transmission signal with the currently applied measured value to the central unit takes place immediately after the reception of the time synchronization signal, while outside of this fixed time clock with the time intervals no transmission transmission through the measuring device he follows.
  • the transmitting and receiving circuit is located between the synchronization and transmission time windows in an idle state, unless this idle state is canceled by a send request.
  • the transmission circuit and the measuring circuit is associated with a common power supply circuit in the housing.
  • the voltage supply circuit has an energy store, for example a battery or a rechargeable accumulator. This energy store is used both to provide a supply voltage for the transmission circuit, as well as a supply voltage for the measuring circuit.
  • the voltage supply circuit may in particular be arranged on a common printed circuit board with the transmitting circuit and / or the measuring circuit. A double power supply for the measuring circuit and the transmission circuit is eliminated, whereby space can be saved and all components can be arranged to save space in a common housing. Since only a single energy storage for power supply is present, a single closable opening on the housing for replacing the energy storage, which can be done very easily in the appropriate housing protection design is sufficient.
  • a first supply line of the voltage supply circuit connected to the transmission circuit is applied directly to the supply voltage.
  • a second supply line connected to the measuring circuit can be applied to the supply voltage via an ohmic resistor. It is advantageous if the second supply line is connected via a capacitor to ground. The capacitor serves to buffer the on the second supply line applied supply voltage for the measuring circuit.
  • the transmission circuit preferably transmits at a frequency of 2.4 GHz, which allows a license-free operation of the measuring device.
  • the radiated transmission power can be limited to 1 mW.
  • the transmission mode can be displayed in the display device of the measuring device.
  • the measuring device also has a receiving circuit, which can be realized with the transmitting circuit as an integrated executed transmitting and receiving circuit with a common antenna. It is advantageous if the central unit acknowledges the complete and / or correct reception of the data by an acknowledgment signal which can be received in the measuring device by a receiving circuit.
  • the confirmation signal received by the measuring device can be output optically or acoustically, e.g. be displayed by an information on the display unit, so that the operator can determine whether the measured values have been completely or correctly transmitted or not.
  • the measuring device may also have an address memory which serves to store an address associated with the measuring device. This address is preferably part of the measured value end signal, so that the Central processing unit receiving measured value end signal can assign the measured value to a specific measuring device.
  • the address of the measuring device is preferably predetermined by the central unit and is changeable. During initialization, the address can be transmitted by the central unit, received in the receiving circuit of the measuring device and stored in the address memory. In this way, fixed specifications of the address as well as input means to enter the address directly into the measuring device. This gives you a very flexible system.
  • One or more measuring devices can easily communicate with a common central unit by means of the changeable address.
  • FIG. 1 schematically a measuring device 10 is shown in the form of a dial gauge.
  • the measuring device 10 has a housing 11 from which protrudes a transducer 12.
  • a transducer 12 In the embodiment of the transducer 12 is mounted linearly displaceable in a guide 13 on the housing 11. With the help of the transducer 12, a change in position of a workpiece can be scanned.
  • an electrical measuring signal M is generated in a measuring circuit 14 of the measuring device 10 ( FIG. 2 ).
  • the measured value corresponding to the measurement signal M is displayed to the operator via a display device 15.
  • the measuring circuit is connected to the display device 15 via a communication interface 18.
  • a display device 15 is for example a monochromatic liquid crystal display (LCD), in particular a so-called TN-LCD or MPN-LCD.
  • the display device 15 is arranged in a rotatably mounted housing part 16, so that depending on the positioning of the measuring device 10, the operator can align the display device 15 so that the displayed digits and / or letters and / or symbols are vertically aligned and not upside down or sideways, making it easier to read the readings.
  • the axis of rotation runs perpendicular to the surface of the display device 15, the rotatability of the housing part 16 is illustrated by arrow P.
  • the housing is therefore dust-proof or dust-proof. It can also be waterproof.
  • the change of the position S of the transducer 12 Deviating from the described embodiment can also be detected by a pivoting movement or deformation of the transducer 12.
  • the measuring device 10 can also be realized as a caliper or as a micrometer.
  • the measuring circuit 14 is electrically connected to a transmission circuit 19.
  • the communication interface 18 serves to transmit the measurement signal M from the measurement circuit 14 to the transmission circuit 19 (FIG. FIG. 2 ).
  • the transmission circuit 19 serves as a wireless interface of the measuring device 10 to a central unit 20.
  • the transmission circuit 19 generates based on the measurement signal M, a transmission signal U, which is transmitted to the central unit 20 wirelessly.
  • the transmission circuit 19 an antenna 21.
  • the antenna 21 is arranged in the housing 11 of the measuring device 10 and executed in the embodiment as a printed circuit board antenna. It is therefore a printed by a copper track on a printed circuit board 22 antenna 21, which is executed in the embodiment as an F-antenna.
  • the printed circuit board antenna 21 has two parallel legs 21a and 21b which are connected to a longitudinal section 21c arranged transversely thereto.
  • the edge-side first leg 21a is electrically connected to ground GND and the other second leg 21b is electrically connected via an antenna line 26 to a transmission control unit 27.
  • the antenna could also be realized as a component mounted on the printed circuit board 22 in the form of an SMD antenna.
  • the shielding arrangement 28 is formed in the embodiment by a series of plated-through holes 29, which connect each of the ground layers of the printed circuit board 22 with each other.
  • the series of plated-through holes 29 preferably extends over the entire length of the printed circuit board 22 in the direction of the longitudinal section 21c.
  • the measuring device 10 has a receiving circuit 23.
  • the receiving circuit 23 uses the same antenna 21.
  • the transmitting circuit 19 and the receiving circuit 23 are integrated into a transmitting and receiving circuit 24.
  • the transmitting and receiving circuit 24 thus constitutes a bi-directional wireless interface to the central unit 20 and can transmit the transmission signal U and receive signals from the central unit 20, for example an initialization signal I.
  • the initialization signal I is used for the first time the connection of the measuring device 10 with the central unit 20 to assign an address to the measuring device 10.
  • the address is given by the CPU 20.
  • the measuring device 10 has an address memory 25, in which the address received by the initialization signal I is stored.
  • the address is transmitted together with the measured value when transmitting the transmission signal U, so that the central unit 20 can assign the received measured value to a specific measuring device 10. In this way, multiple measuring devices 10 wirelessly be connected to a common central unit 20.
  • the addresses are specified during initialization by the central unit 20 and remain after the one-time assignment until a new initialization is obtained. Before re-assigning the address of a measuring device 10 whose address must be deleted by an operator. Only then can the central unit assign a new address. It is also possible that the initialization is performed again during operation, for example, when additional measuring devices 10 are connected to the central unit 20 or measuring devices 10 are turned off.
  • the transmission mode of the measuring device 10 during the transmission of the transmission signal U is displayed to the operator on the display device 15, for example by a symbol 17, as shown in FIG FIG. 1 is shown by way of example.
  • the central unit 20 acknowledges reception by an acknowledgment signal B.
  • the reception circuit 23 and the transmission and reception circuit 24 have received the confirmation signal B, the reception is displayed on the display 15 of the operator. In the embodiment, this is done by the output of the term "Data" on the display device 15.
  • the display of any symbols, terms, pictograms or the like is suitable to indicate the transmission mode and / or the receipt of the acknowledgment signal B.
  • acoustic signals can also be used. However, this is not provided in the embodiment therefore, because the housing 11 is to be executed protected against dust or water. The protection can be realized more easily by an exclusively optical display.
  • a voltage supply circuit 30 is provided, to which the measuring circuit 14 and the transmitting and receiving circuit 24 is connected.
  • the power supply circuit 30 has an energy store 31, which is formed in particular by a battery or a rechargeable accumulator.
  • the energy store 31 serves as the only energy source for the measuring device 10 and provides a supply voltage V available.
  • the power supply circuit 30 is arranged in the preferred embodiment, together with the transmitting and receiving circuit 24 on a first circuit board part 22 a of the circuit board 22.
  • the measuring circuit 14 is arranged on a second printed circuit board part 22b of the printed circuit board 22, wherein the two printed circuit board parts 22a, 22b are connected to each other electronically via a flexible connecting cable 34.
  • the printed circuit board 22 is arranged in the housing 11 of the measuring device 10.
  • the first printed circuit board part 22a is arranged below the display device 15 in the rotatable housing part 16 and moves with a rotation with this housing part 16 with.
  • the second printed circuit board part 22b with the measuring circuit 14 is arranged in a base part 35 of the housing 11, on which the guide 13 is provided.
  • the housing part 16 can relative to the base part 35 in the direction of arrow P ( FIG. 1 ) to be turned around.
  • the second printed circuit board part 22b remains stationary in the base part 35 when the housing part 16 is rotated relative to the base part 35 ( FIG. 3 ).
  • the measuring circuit 14 has an eg inductive sensor 36, which detects the position of a scale 38 and forwards the sensor signal to a measuring control unit 42.
  • the scale 38 is part of the transducer 12, so that on the position of the transducer 12 also the position of the scale 38 is changed and detected by the sensor 36.
  • a measuring signal M corresponding to the sensor signal can be transmitted from the measuring control unit 42 via the communication interface 18 or the control unit 45 to the transmitting and receiving circuit 24.
  • a battery compartment opening 32 Only via a battery compartment opening 32 accessibility to the power supply circuit 30 is enabled to replace the battery or the accumulator can. If a rechargeable accumulator is provided instead of a battery, the battery compartment opening 32 could also be omitted and a closable cable connection 33 accessible from the outside can be provided. The cable connection 33 can then serve to connect the measuring device 10 to a charger and / or also serve for the wired transmission of the measurement signal M to the central unit 20 or another subscriber.
  • FIG. 2 a block diagram of the power supply circuit 30 is shown.
  • a first supply line 37 connects the transmitting and receiving circuit 24 directly to the energy store 31.
  • a first voltage V1 is applied to the first supply line 37.
  • the first supply line 37 is electrically connected via a resistor 39 to a second supply line 40.
  • the second supply line 40 is connected to the measuring circuit 14.
  • the second supply line 40 is connected via a capacitor 41 to ground GND.
  • At the second supply line 40 is a second voltage V2 for the measuring circuit 14 at.
  • the voltage supply circuit 30 ensures that the measuring signal M can be detected without being affected during the transmission of the transmission signal U. Due to the fact that the first supply line 37 is applied directly to the supply voltage V of the energy storage 31, a voltage drop of the first voltage V1 can briefly occur by sending the transmission signal U.
  • the second voltage V2 for the measuring circuit 14 is buffered via the capacitor 41 and maintains the necessary voltage value of the second voltage V2 at voltage fluctuations of the first voltage V1 over a certain time. As a result, the charge of the capacitor 41 can be reduced.
  • the capacitor 41 is charged later by a charging current through the resistor 39 later again.
  • the measuring circuit 14 and the transmitting and receiving circuit 24 is assigned a common control unit 45.
  • the control unit 45 may be formed, for example, by a microcontroller .mu.C.
  • the operation of the measuring circuit 14 and of the transmitting and receiving circuit 24 is controlled or coordinated via the control unit 45.
  • the control unit 45 also has the address memory 25.
  • the measuring device 10 can be set to extend the battery life in a first state of rest and preferably in a second state of rest. The following explains the transmission protocol and the two idle states.
  • the transmission control unit 27 or the transmitting and receiving circuit 24 synchronizes with the central unit 20 within a predetermined time interval ⁇ t, for example every 250 ms.
  • the synchronization serves to adapt the clock of the measuring device 10 to the central clock of the central unit 20 in order to compensate deviations prevent.
  • the transmission control unit 27 and the transmitting and receiving circuit 24 are located between the synchronization and transmission time windows in the first idle state, unless this first idle state is not canceled by a send request R.
  • the time synchronization signal T may be uniform for all measuring devices connected to the central unit 20 or may be provided via the address for a specific measuring device 10. In this case, the measuring devices 10 can be assigned to different time intervals ⁇ t and transmission times.
  • This first idle state of the transmission control unit. 27 and the transmitting and receiving circuit 24 is terminated by the control unit 45 when a transmission request R is present.
  • a transmission request R is present.
  • the measuring signal M changes or when with the time synchronization signal T
  • a request signal A is received by the central unit 20 or when a data key 46 of the measuring device 10 is actuated by an operator.
  • the measuring device 10 is caused to transmit the current applied measuring signal M by transmitting the transmission signal U.
  • the request signal A contains the address of the measuring device 10, which is requested for the transmission of measured values.
  • the received address compared with the stored in the address memory 25 address of the measuring device 10 and only then sent to the next possible time a transmission signal U when the two addresses match.
  • the current measured value M is queried by the control unit 45 at regular intervals at the measuring control unit 47. If no measured value change takes place during a predetermined period and if there is no other transmission request R, then the control unit 45 switches to a second idle state in which the regular measured value query is switched off. In this second idle state, the measurement control unit 42 is also at rest. As soon as the measured value M changes or another transmission request R is present, this second idle state is ended again.
  • the bidirectional transmission is preferably coded, so that unauthorized persons have no access to the transmitted data.
  • a private key is additionally deposited in the central station 20 and in the measuring device 10. Only data that can be decrypted by the transfer control unit 27 with this private key is passed through the transfer control unit 27. Otherwise, the received data can not be further processed. This achieves the greatest possible data protection.
  • the invention relates to a measuring device 10 in the form of a dial gauge, a caliper or a micrometer.
  • the measuring device 10 has a housing 11 in which a measuring circuit 14, a transmitting circuit 19 and a receiving circuit 23 are arranged on a common printed circuit board 22.
  • the transmitting circuit 19 and the receiving circuit 23 use a common printed circuit board antenna 21, which is also provided on the printed circuit board 22.
  • a power supply circuit 20 for powering the measuring circuit 14, the transmitting circuit 19 and the receiving circuit 23 is arranged.
  • On an accessible from outside the housing 11 interface between the measuring circuit 14 and the transmitting circuit 19 and the receiving circuit 23 can therefore be omitted.
  • the common power supply circuit 30 the space for the entire circuit arrangement is reduced.
  • the housing 11 of the measuring device 10 can be easily sealed and therefore execute in the required housing protection design. Via a transducer 12 on the housing 11, a measured value is recorded, transferred by the measuring circuit 14 in an electrical measurement signal M and transmitted via the transmission circuit 19 to an external device 20 wirelessly.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Transceivers (AREA)
  • Transmitters (AREA)

Claims (14)

  1. Dispositif de mesure (10),
    comprenant un boîtier (11) sur lequel est disposé un capteur de mesure (12) dont la positon (S) peut être modifiée,
    comprenant un circuit de mesure (14) qui est disposé dans le boîtier et est destiné à produire un signal de mesure (M) électrique en fonction de la position du capteur de mesure (12),
    comprenant un circuit d'émission (19) qui est disposé dans le boîtier (11) et est relié au circuit de mesure (14) par l'intermédiaire d'une ligne de communication (18),
    le circuit d'émission (19) étant conçu pour envoyer sans fil un signal de transmission (U), correspondant au signal de mesure (M) électrique, à une unité centrale (20), sachant que le signal de transmission présente le signal de mesure (M) appliqué du moment,
    comprenant un circuit de réception (23) qui est réalisé de façon intégrée avec le circuit d'émission (19), en tant que circuit d'émission et de réception (24),
    comprenant une unité de commande (45) qui est associée au circuit de mesure ainsi qu'au circuit d'émission et de réception (24), l'unité de commande (45) étant conçue pour extraire la valeur de mesure du moment à des intervalles de temps réguliers d'une unité de commande de mesure (42),
    le circuit d'émission et de réception (24) étant conçu pour se synchroniser avec l'unité centrale (20) dans un intervalle de temps (Δt) prédéterminé et, en présence d'une demandé d'émission (R), envoyer le signal de transmission (U) à l'unité centrale (20), immédiatement après la réception du signal de synchronisation de temps (T),
    et le circuit d'émission et de réception (24) se trouvant à l'état de repos entre les fenêtres de temps de synchronisation et d'émission, dans la mesure où cet état de repos n'est pas annulé par une demande d'émission (R).
  2. Dispositif de mesure selon la revendication 1, caractérisé en ce qu'il est prévu un circuit d'alimentation en tension (30) qui présente un accumulateur d'énergie (31) et auquel sont connectés aussi bien le circuit d'émission (19) que le circuit de mesure (14).
  3. Dispositif de mesure selon la revendication 2, caractérisé en ce qu'une première ligne d'alimentation (37), reliée au circuit d'émission (19), est connectée directement à la tension d'alimentation (V) du circuit d'alimentation en tension (30).
  4. Dispositif de mesure selon la revendication 2, caractérisé en ce qu'une deuxième ligne d'alimentation (40), reliée au circuit de mesure (14), est reliée à la tension d'alimentation (V) du circuit d'alimentation en tension (30), par l'intermédiaire d'une résistance (39), et est reliée à la masse (GND) par l'intermédiaire d'un condensateur (41).
  5. Dispositif de mesure selon les revendications 3 et 4, caractérisé en ce que la résistance (39) est reliée directement à la tension d'alimentation (V).
  6. Dispositif de mesure selon la revendication 1, caractérisé en ce qu'il est réalisé comme dispositif de mesure de longueur.
  7. Dispositif de mesure selon la revendication 1, caractérisé en ce que le boîtier (11) est réalisé de manière à être protégé contre la poussière ou à être étanche à la poussière et/ou à être protégé contre l'eau.
  8. Dispositif de mesure selon la revendication 1, caractérisé en ce que le circuit d'émission (19) présente une antenne (21) disposée dans le boîtier (11).
  9. Dispositif de mesure selon la revendication 8, caractérisé en ce que l'antenne (21) est réalisée sous forme d'antenne sur circuit imprimé ou d'antenne à composants montés en surface.
  10. Dispositif de mesure selon la revendication 1, caractérisé en ce que le circuit d'émission (19) et le circuit de mesure (14) présentent une unité de commande (45) commune.
  11. Dispositif de mesure selon la revendication 1, caractérisé en ce qu'il est prévu une mémoire d'adresse (25) qui sert à enregistrer une adresse associée au dispositif de mesure (10).
  12. Dispositif de mesure selon la revendication 11, caractérisé en ce que l'adresse est reçue par le circuit de réception (23) et est enregistrée dans la mémoire d'adresse (25).
  13. Dispositif de mesure selon la revendication 11, caractérisé en ce que le circuit d'émission (19) est conçu pour envoyer l'adresse du dispositif de mesure (10) à l'unité centrale (20), conjointement avec le signal de transmission (U).
  14. Ensemble constitué d'au moins un dispositif de mesure (10) selon l'une des revendications précédentes et d'une unité centrale (20) comprenant une unité d'émission et de réception pour la communication sans fil avec le dispositif de mesure (10), au nombre d'au moins un, l'unité centrale (20) étant conçue pour associer une adresse au dispositif de mesure (10) lors de l'initialisation (I).
EP11161535.7A 2011-04-07 2011-04-07 Dispositif de mesure doté d'une commutation d'émission pour la transmission sans fil d'un signal de mesure Active EP2508839B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP11161535.7A EP2508839B1 (fr) 2011-04-07 2011-04-07 Dispositif de mesure doté d'une commutation d'émission pour la transmission sans fil d'un signal de mesure
JP2014503081A JP2014516434A (ja) 2011-04-07 2012-03-29 測定値を無線送信するための送信回路を持つ測定装置
CN201280017190.7A CN103534550B (zh) 2011-04-07 2012-03-29 带有用于无线传输测量值发送信号的发送电路的测量装置
PCT/EP2012/055692 WO2012136566A1 (fr) 2011-04-07 2012-03-29 Dispositif de mesure avec circuit d'émission pour la transmission sans fil d'un signal de valeur de mesure
US13/620,777 US8839669B2 (en) 2011-04-07 2012-09-15 Measuring arrangement with transmission circuit for wireless transmission of a measuring value
JP2015223638A JP6247677B2 (ja) 2011-04-07 2015-11-16 測定値を無線送信するための送信回路を持つ測定装置
JP2017100715A JP6373449B2 (ja) 2011-04-07 2017-05-22 測定装置

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JP2017182827A (ja) 2017-10-05
US8839669B2 (en) 2014-09-23
CN103534550A (zh) 2014-01-22
WO2012136566A1 (fr) 2012-10-11
JP2014516434A (ja) 2014-07-10
CN103534550B (zh) 2017-12-15
JP2016065876A (ja) 2016-04-28
JP6373449B2 (ja) 2018-08-15
US20130014579A1 (en) 2013-01-17
EP2508839A1 (fr) 2012-10-10

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